public function offsetSet($offset, $value)
{
if (!\is_bool($value)) {
throw new \InvalidArgumentException('$value is not a bool');
}
//Expand the set if necessary
if ($offset >= $this->count()) {
$this->_List = $this->_List->concat(ArrayList::repeat(false, $offset - $this->count() + 1));
}
$this->_List->offsetSet($offset, (bool) $value);
}
